| ITF Japan F7 | 06/19 03:55 | - | Hiromasa Oku v Arata Onozawa | Retired | |
| ITF Japan F6 | 06/13 00:00 | - | Chih-Jen Ho v Arata Onozawa | 6-4,6-2 | |
| ITF Japan F6 | 06/10 01:30 | - | Soichiro Moritani v Arata Onozawa | 1-6,6-7 | |
| ITF Thailand F10 | 06/03 06:00 | - | Patcharapol Kawin v Arata Onozawa | Retired | |
| ITF Thailand F10 | 05/29 03:00 | - | Arata Onozawa v Jacob Grills | 3-6,1-6 | |
| ITF Thailand F10 | 05/28 05:10 | - | Arata Onozawa v Chayanon Kaewsuto | 6-0,6-4 | |
| ITF Thailand F10 | 05/27 06:20 | - | Arata Onozawa v Warit Sornbutnark | 7-6,6-1 | |
| ITF Japan F4 | 04/01 02:30 | - | Ko Suzuki v Arata Onozawa | Retired | |
| ITF Japan F1 | 03/14 01:00 | - | Di Wu v Arata Onozawa | 6-3,6-0 | |
| ITF Japan F1 | 03/11 02:55 | - | Arata Onozawa v Masaki Osafune | 4-6,6-1,6-3 |